Basic Electrical Parameters
• Product Series: Bulletin 1494G (Industrial Safety Disconnect Switch)
• Current Rating (Switch Size): 600A
• Voltage Rating: 600V AC / 250V DC
• Number of Poles (Poles): 3-pole, 3-phase
• Type: Non-fusible
• Enclosure Type (Enclosure Type): Type 3R, 4, 12 (painted metal, rainproof, splash-proof, dustproof)
• Option Code (Options): -421 (representing 2N.O. and 2N.C. electrical interlocks)
Horsepower Ratings - UL/CSA/NEMA
• 230V AC / 60 Hz: 200 HP
• 460V AC / 60 Hz: 400 HP
• 575V AC / 60 Hz: 500 HP
• 250V DC: 50 HP
Power (kW) Ratings - IEC Applications (AC23 Category)
• 220-240V / 50 Hz: 150 kW
• 380-440V / 50 Hz: 295 kW
• 500-600V / 50 Hz: 375 kW
Mechanical Characteristics
• Mechanical Life (Typical Number of Operations): 10,000 cycles (for 400-600A specifications)
• Operating Frequency (cycles/hour): 240 cycles (for 400-600A specifications)
Environmental Specifications
• Operating Ambient Temperature: -35°C to +40°C (-31°F to +104°F)
• Storage Temperature: -40°C to +65°C (-40°F to +149°F)
• Altitude: 2000 meters
• Relative Humidity: Up to 90% at +20°C (+68°F), up to 50% at +40°C (+104°F)
Design and Testing Requirements
• Dielectric Strength: 2200V for 1 minute
• Electrical Life: 6000 operations at rated current
• Short-Circuit Withstand Capacity: 10,000 A when not fused
Certifications and Standards (Based on the general certification information for the 1494G in the document)
• Certifications: cULus Listed (File No. E227497, Guide No. WIAX), RoHS
• Standards Compliance: CSA C22.2 No. 4, UL 98, UL 508
Summary: The 1494G-GF3N-421 is a high-current disconnect switch designed for heavy industrial applications, featuring high horsepower and power ratings. It is housed in a sturdy, weatherproof metal enclosure and incorporates electrical interlocks for safety control.